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Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Accretable Yield) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Receivables [Abstract]    
Accretable yield at the beginning of period $ 414 $ 676
Accretion (33) (50)
Reclassification to nonaccretable difference for loans with changing cash flows (9) (60)
Changes in accretable yield for non-credit related changes in expected cash flows 9 (152)
Outstanding accretable yield $ 381 $ 414